Aura manga?

Well is there a manga that has a bases where aura does alot. Kind of like Hunter X Hunter. They had nen which if one without went against one with nen he wouldnt stand a chance. Is there any other manga with an aura like that? Where it makes a difference? In naruto it had a bit like that. Chakra, exept people could be buff with out being able to use mass chakra. (lee, gai).
Hunter x Hunter my favorite anime/manga. So i thought it would be cool to see another that has somthing similar.

I meant aura that actually makes a differance. I already read/reading bleach. yuyu hakasho i am already watching, slowly. DBZ the aura dosent really have anything to do with making them stronger. Besides kaoken. Hunter X Hunter is basicly based off of needing nen to fight other nen users. Ill check out psychic academy.

Actually, out of all the ones mentioned so far, Shaman King is probably the one that fits closest to what you're looking for. The strength of a shaman is measured both by his own spirit power as well as how much of his spirit's oversoul he is able to manifest. (And both of those are expressed in absolute numerical terms or percentages)

Wow after thinking about it for a while is is pritty hard to define what is classified as an aura when it comes to anime. The vastness of different abilities out there in anime it is kind of hard to find one definition for aura. I mean you can make a case in some instances like in Rurouni Kenshin, Shakugan no Shana, and many other series that killing intent can be considered an aura. Would you consider magic beaing an aura, cause you can make a case for it in Bastard and Negima. I could go on and on and on. Be a little more specific please